/*
GanttProject is an opensource project management tool. License: GPL2
Copyright (C) 2010 Dmitry Barashev

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/
package net.sourceforge.ganttproject.chart.mouse;

import java.awt.event.MouseEvent;
import java.util.Date;

import net.sourceforge.ganttproject.calendar.walker.WorkingUnitCounter;
import net.sourceforge.ganttproject.chart.item.TaskBoundaryChartItem;
import net.sourceforge.ganttproject.gui.UIFacade;
import net.sourceforge.ganttproject.task.TaskLength;
import net.sourceforge.ganttproject.task.TaskMutator;
import net.sourceforge.ganttproject.task.algorithm.RecalculateTaskScheduleAlgorithm;

public class ChangeTaskEndInteraction extends ChangeTaskBoundaryInteraction
        implements MouseInteraction {
    private TaskMutator myMutator;
    private WorkingUnitCounter myCounter;
    
    public ChangeTaskEndInteraction(MouseEvent initiatingEvent, TaskBoundaryChartItem taskBoundary, 
            TimelineFacade chartDateGrid, UIFacade uiFacade, RecalculateTaskScheduleAlgorithm taskScheduleAlgorithm) {
        super(taskBoundary.getTask().getStart().getTime(), taskBoundary.getTask(),
            chartDateGrid, uiFacade, taskScheduleAlgorithm);
        myMutator = getTask().createMutator();
        myCounter = new WorkingUnitCounter(getChartDateGrid().getCalendar(), getTask().getDuration().getTimeUnit());
    }

	@Override
	public void apply(MouseEvent event) {
		Date dateUnderX = getChartDateGrid().getDateAt(event.getX());
		TaskLength newDuration = myCounter.run(getStartDate(), dateUnderX);
        myMutator.setDuration(newDuration);
        updateTooltip(event);
	}

    protected String getNotesText() {
        return getTask().getEnd().toString();
    }

    @Override
    public void finish() {
        super.finish(myMutator);
    }

}